Where does “undefendably” come from?

undefendably (English) comes from English undefendable, from English defendable, from Old French deffendable, from Old French défendre, from Latin dēfendō, from Latin dē-, from Latin dē, from Latin post — afterwards, post; by, at.

undefendably (English): Such that it cannot be defended

Definitions

  1. Such that it cannot be defended

Ancestry of “undefendably”, step by step

undefendably traces back through two separate lines of ancestry.

via English undefendable

StepLanguageWordMeaning
1EnglishundefendableNot capable of being defended
2EnglishdefendableCapable of being defended
3Old Frenchdeffendable
4Old Frenchdéfendreto defend
5Latindēfendōto drive away
6Latindē-of; from
7Latinof; concerning; about
8Latinpostbehind; after, since, besides, except; behind,...
9Latinposteablative singular of postis
10Proto-Italicpostibehind, after
11Proto-Indo-Europeanpóstiafter
12Proto-Indo-Europeanpósafterwards, post; by, at

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Indo-European pós